I own both the HK45 and the HK45c and IMO, the HK45c handles a lot better than the full-size. Just something to consider.

I've owned both the HK45 and HK45c previously. I shot the fullsize better/. I also prev owned an HK USPc45 before.

Surprisingly enough - the HK45 does have less recoil than an all steel 1911. I was surprised by this since the weapon is obviously lighter. I still shoot a 1911 better, however. But, the HKs are sweet guns.